Add support for optional arb and pmic clock for i2c provided in upstream linux DTSI.
Signed-off-by: Christian Marangi ansuelsmth@gmail.com --- drivers/i2c/mtk_i2c.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/drivers/i2c/mtk_i2c.c b/drivers/i2c/mtk_i2c.c index 5592fe91817..3450177741a 100644 --- a/drivers/i2c/mtk_i2c.c +++ b/drivers/i2c/mtk_i2c.c @@ -221,6 +221,8 @@ struct mtk_i2c_priv { void __iomem *pdmabase; /* dma base address*/ struct clk clk_main; /* main clock for i2c bus */ struct clk clk_dma; /* DMA clock for i2c via DMA */ + struct clk clk_arb; /* DMA clock for i2c ARB */ + struct clk clk_pmic; /* DMA clock for i2c PMIC */ const struct mtk_i2c_soc_data *soc_data; /* Compatible data for different IC */ int op; /* operation mode */ bool zero_len; /* Only transfer slave address, no data */ @@ -255,6 +257,18 @@ static int mtk_i2c_clk_enable(struct mtk_i2c_priv *priv) if (ret) return log_msg_ret("enable clk_dma", ret);
+ if (priv->clk_arb.dev) { + ret = clk_enable(&priv->clk_arb); + if (ret) + return log_msg_ret("enable clk_arb", ret); + } + + if (priv->clk_pmic.dev) { + ret = clk_enable(&priv->clk_pmic); + if (ret) + return log_msg_ret("enable clk_pmic", ret); + } + return 0; }
@@ -262,6 +276,18 @@ static int mtk_i2c_clk_disable(struct mtk_i2c_priv *priv) { int ret;
+ if (priv->clk_pmic.dev) { + ret = clk_disable(&priv->clk_pmic); + if (ret) + return log_msg_ret("disable clk_pmic", ret); + } + + if (priv->clk_arb.dev) { + ret = clk_disable(&priv->clk_arb); + if (ret) + return log_msg_ret("disable clk_arb", ret); + } + ret = clk_disable(&priv->clk_dma); if (ret) return log_msg_ret("disable clk_dma", ret); @@ -748,6 +774,10 @@ static int mtk_i2c_of_to_plat(struct udevice *dev)
ret = clk_get_by_index(dev, 1, &priv->clk_dma);
+ /* optional i2c clock */ + clk_get_by_name(dev, "arb", &priv->clk_arb); + clk_get_by_name(dev, "pmic", &priv->clk_pmic); + return ret; }